The most durable ALL CLIMATE cover on the market. DuPont Tyvek top panel, now with up to 40% more Tyvek fabric, provides maximum protection against the sun's damaging U.V. rays. Extends below most awnings. High performance 3-layer multi-color polypropylene sides insure maximum breathability. Passenger side zipper entry doors will accommodate any door location. Weighted strap and buckle attachments prevent billowing and are easier to install than ever. Reinforced, elasticized corners resist tears and snags. Vents have been added to reduce billowing. Front and rear cinching now uses straps and buckles. Polypropylene ladder cap for reinforcement.